Fix format memory leak (#694)
Fix format memory leak (#694)

* Whitespace diffs.

Committing separate from other changes.

* Fix leak when fmt string ends with non-filtercheck

Make sure that any final rawstring_check added to the list of tokens is
also added to m_chks_to_free, so it is properly freed.

This fixes https://github.com/draios/sysdig/issues/693.

angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig